30代의挑戰과勝負
Subtitle: tongnip ŭl aptanggyŏra, tangsin do kŏpu ka toelsu itta
By: pʻyŏnjŏja U Pyŏng-dong, Yi Sang-jin, Kim Chŏng-gu
Publisher: Hanʾguk Kyoyuk Pangsong Kyojaesa
Published: 1982
Place of publication: Sŏul
Language: kor
Number of pages: 260
Subjects: Millionaires
Other titles: 30-tae ŭi tojŏn kwa sŭngbu; Samsiptae ŭi tojŏn kwa sŭngbu.